Aerosol generator

Abstract

We obtain information on the number of times a user has used the device to improve the user experience. [Solution] The aerosol generating device comprises a housing assembly, a bracket assembly disposed inside the housing assembly and having a housing cavity 21 inside, a deformable member 3 disposed inside the housing cavity and configured to divide the housing cavity into a heating cavity 211 and a detection cavity 212 having a sealed structure, an airflow sensor 5 disposed inside the detection cavity for acquiring pressure change information, and a control circuit board electrically connected to the airflow sensor and outputting user inhalation count information in response to pressure change information. The heating cavity and the detection cavity are separated from each other. When the user inhales, the deformable member deforms, changing the pressure inside the detection cavity, and the airflow sensor and the control circuit board work together to acquire user inhalation count information.

Description

Technical Field

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[0001] This application relates to the field of aerosol generation technology, and more specifically, to an aerosol generation device.

Background Art

[0002] An aerosol generation device is a device that acts on an aerosol generation product in a heating manner to generate an aerosol for a user to inhale. In conventional aerosol generation devices, especially those for NSC (NOx storage catalyst) products, there is no suction detection structure, so it is impossible to obtain information on the number of used suction times and the remaining number of suction times, resulting in a poor user experience.

Summary of the Invention

[0003] This application provides an aerosol generation device that can easily obtain information on the number of user inhalations and improve the user experience.

[0004] <* This application provides an aerosol generation device comprising a housing assembly, a bracket assembly disposed inside the housing assembly and having an accommodation cavity therein, a deformation member configured to divide the accommodation cavity into a heating cavity for accommodating an aerosol generation product and a detection cavity having a sealed structure, an airflow sensor disposed in the detection cavity, and a control circuit board electrically connected to the airflow sensor. The heating cavity and the detection cavity are separated from each other. The deformation member is configured to deform during user inhalation to change the air pressure in the detection cavity. The airflow sensor is configured to obtain air pressure change information. The control circuit board is configured to output information on the number of user inhalations in response to the air pressure change.

[0005] In some embodiments, the deformation member has a flat planar structure or a curved surface structure protruding towards the heating cavity.

[0006] In some embodiments, the deformable member includes a plurality of protrusions and recesses, which are arranged continuously and alternately to form a wave-like shape.

[0007] In some embodiments, the bracket assembly includes a bracket base and a base, the structure of which at least a portion is inserted into the bracket base, and the deformation member is attached to the base. The base is provided with a mounting hole, and the airflow sensor is located within the mounting hole.

[0008] In some embodiments, the base includes an insertion portion and a base portion, the side wall structure of the insertion portion forming part of the heating cavity, and a first stepped structure is provided inside the insertion portion for contacting the end of the aerosol generating product. The deformation member is located inside the insertion portion and is connected to the insertion portion by interference fit. The base portion is connected to the insertion portion, and the surface of the base portion facing the insertion portion is in contact with the bracket base.

[0009] In some embodiments, a heating element is further provided, which is disposed within the housing cavity and heats the aerosol-generating product. A second stepped structure is provided on the side of the insertion portion away from the base portion, and a positioning structure is provided on the inner wall of the bracket base, and the heating element is inserted into the insertion portion, with one end in contact with the second stepped structure and the other end in contact with the positioning structure.

[0010] In some embodiments, the bracket assembly further includes a first sealing member for sealing the gap between the heating element and the insertion element. The first sealing member includes a first sealing section, a second sealing section, and a third sealing section. The first sealing section extends along the axial direction of the insertion element and is located between the inner wall of the insertion element and the outer wall of the heating element. The second sealing section extends along the radial direction of the insertion element and each of its ends is connected to the first sealing section and the third sealing section. The third sealing section extends along the axial direction of the insertion element and is located in close contact with the outer wall of the insertion element.

[0011] In some embodiments, a first engagement structure is provided on the side of the base portion opposite to the insertion portion, and a second engagement structure is provided within the housing assembly. The first engagement structure and the second engagement structure are engaged, and the bracket assembly is fixed in place.

[0012] The aerosol generating apparatus further comprises a second sealing member positioned between the base portion and the housing assembly.

[0013] In some embodiments, the bracket assembly further includes a clamping member positioned away from the base of the bracket substrate. The clamping member has a plurality of clamping portions that are convex inward along its radial direction, and the clamping portions are configured to contact the outer wall of the aerosol-generating product.

[0014] The bracket assembly further includes an end cap provided on the side of the clamping member away from the bracket base and coaxially with the clamping member. The inner wall of the end cap is provided with a plurality of intake grooves, each of which extends along the axial direction of the end cap and is uniformly provided along the circumferential direction of the end cap, and the intake grooves communicate with the heating cavity and the airflow segment of the aerosol generating product, respectively.

[0015] In some embodiments, the aerosol generating device further comprises a reflective member that is coaxially fitted outside the heating element and positioned at a distance from the heating element, for reflecting the thermal radiation from the heating element.

[0016] The aerosol generator in the above embodiment includes a housing assembly, a bracket assembly, a deformation member, an airflow sensor, and a control circuit board. The deformation member is placed inside a housing cavity, and the housing cavity is configured to be divided into a heating cavity and a sealed detection cavity. The airflow sensor is placed inside the detection cavity to monitor changes in air pressure within the detection cavity. When a user inhales, the deformation member deforms based on the negative pressure principle. Because the detection cavity has a sealed structure, the internal gas mass remains constant. The deformation of the deformation member increases the volume of the detection cavity, which changes the air pressure inside. When the airflow sensor detects this change in air pressure, the control circuit board can output information in response to the number of times the user inhales, thereby improving the user experience. [Brief explanation of the drawing]

[0017] [Figure 1] This is a cross-sectional view of the structure of an aerosol generating device in use according to one embodiment. [Figure 2] This is a cross-sectional view of the structure of an aerosol-generating product in one embodiment. [Figure 3] This is a cross-sectional view of the engagement structure between a bracket assembly, a heat-generating member and a deformation member in one embodiment. [Figure 4] This is a three-dimensional exploded view of the engagement structure between the bracket assembly, the heat-generating member and the deformation member in one embodiment. [Figure 5] This is a cross-sectional view of the base structure in the embodiment. [Figure 6] This is a structural cross-sectional view of the first sealing member in one embodiment. [Figure 7] This is a schematic diagram showing the assembly of the bracket assembly and housing assembly in one embodiment. [Figure 8]It is a partial enlarged schematic view of location C in FIG. 7. [Figure 9] It is a schematic configuration diagram of a clamping member in one embodiment. [Figure 10] It is a schematic configuration diagram of an end cap in one embodiment.

Explanation of Reference Signs

[0018] 1 Housing assembly, 11 Second engagement structure, 111 Second extending portion, 112 Second engaging portion 2 Bracket assembly, 21 Accommodation cavity, 211 Heating cavity, 212 Detection cavity, 22 Bracket base, 221 Positioning structure, 23 Base, 231 Mounting hole, 232 Insertion portion, 2321 First step structure, 2322 Second step structure, 233 Base portion, 2331 First engagement structure, 2332 First extending portion, 2333 First engaging portion, 24 First sealing member, 241 First sealing portion, 242 Second sealing portion, 243 Third sealing portion, 25 Clamping member, 251 Clamping portion, 26 End cap, 261 Intake groove 3 Deformation member 4 Heat generating member 5 Airflow sensor 6 Power supply assembly, 61 Control circuit board, 62 Battery 7 Second sealing member 8 Reflective member A, Aerosol generating product, A1 Substrate segment, A2 Airflow segment, A21 Airflow hole, A3 Suction segment, B, Axis of accommodation cavity

Embodiments for Carrying out the Invention

[0019] The present application will be described in more detail below through specific embodiments with reference to the drawings. Similar components in different embodiments have corresponding similar component numbers. In the following detailed description, many details are set forth in order to facilitate a better understanding of the present application. However, those skilled in the art can readily understand that some features may be omitted under different circumstances or replaced by other components, materials, or methods. In some cases, some operations related to the present application are not illustrated or described herein in order to avoid burying the core part of the present application in excessive explanations. For those skilled in the art, it is not necessary to describe these related operations in detail, and based on the description in the specification and general knowledge in the technical field, the related operations can be fully grasped.

[0020] Also, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operation steps according to each embodiment can also be reordered or adjusted in an obvious manner for those skilled in the art. Therefore, the specification and drawings are only for clearly explaining the embodiments and do not mean essential configurations and / or orders.

[0021] The numbering of components in this specification, such as "first", "second", etc., is only used to distinguish the described objects and has no order or technical meaning. The "connection" and "coupling" described in the present application include both direct and indirect connections (couplings) unless otherwise specified.

[0022] The present application provides an aerosol generating device (hereinafter abbreviated as the generating device) that can be used to heat an aerosol generating product A to generate an aerosol that can be used by a user. Of course, the generating device can also be applied to fields such as atomization and aromatherapy.

[0023] Before describing the generating apparatus, it is necessary to describe in detail the aerosol generating product A to which this application applies. The aerosol generating product A includes a continuously arranged substrate segment A1, an airflow segment A2, and an intake segment A3. The substrate segment A1 is formed by packaging a substance capable of generating aerosols in a material such as packaging paper, and the airflow segment A2 is provided with a plurality of airflow holes A21 for the passage of aerosols or external air.

[0024] Referring to Figure 2, in one embodiment, when the aerosol generating product A is an oxygen-free combustion product (e.g., NSC model), the airflow vents of the airflow segment A2 include not only a first portion provided along the axial direction of the aerosol generating product A, but also a second portion provided along the radial direction of the aerosol generating product A. When a user inhales through the suction segment A3, the rapid flow of gas generates negative pressure within the aerosol generating product A. Based on Bernoulli's negative pressure principle, outside air enters the airflow segment A2 through the airflow vents A21, and after an aerosol is generated in the substrate segment A1, the aerosol flows along the airflow segment A2 to the suction segment A3 based on Bernoulli's negative pressure principle, making it available for use by the user.

[0025] The term "aerosol" refers to a dispersed form of solid or liquid particles in a gas. As used herein, "aerosol" generally refers to a substance that has been converted from a solid or liquid state to an inhalable state containing suspended solid or liquid drug particles by vaporization, atomization, spraying, or other means.

[0026] Refer to Figures 1, 3 to 10. The generating device comprises a housing assembly 1, a bracket assembly 2, a deformable member 3, a heating member 4, an airflow sensor 5, and a power supply assembly 6. The housing assembly 1 may be understood as a collection of related structures that constitute the overall outer contour of the generating device. For example, the housing assembly 1 may be constructed by combining one or more members, and corresponding assembly structures are arranged inside the housing assembly 1 or on the housing wall to facilitate mounting of other components of the generating device to the housing assembly 1. A mounting space is provided inside the housing assembly 1, and the bracket assembly 2 is located within this mounting space inside the housing assembly 1. The deformable member 3, the heating member 4, and the airflow sensor 5 are all located inside the bracket assembly 2. The bracket assembly 2 constitutes a fixing structure for the deformable member 3, the heating member 4, and the airflow sensor 5. The power supply assembly 6 can control the operation of the heating member 4 and the airflow sensor 5 and can increase the power required for the operation of the heating member 4 and the airflow sensor 5. The power supply assembly 6 includes a control circuit board 61, a battery 62, and a control button (not shown). The control circuit board 61 and battery 62 may be located within the mounting space, and the control button may be located in the housing assembly 1, with at least some of its structure exposed from the housing assembly 1, thereby facilitating user operation and adjustment of the generating device.

[0027] Referring to Figure 3, a housing cavity 21 is provided inside the bracket assembly 2, the deformable member 3 is placed inside the housing cavity 21, and the housing cavity 21 is configured to be divided into a heating cavity 211 and a detection cavity 212, with the heating cavity 211 and the detection cavity 212 being separated (partitioned) from each other. The detection cavity 212 has a sealed structure, the deformable member 3 is configured to deform when the user inhales and change the air pressure inside the detection cavity 212, the heating cavity 211 is configured to house the aerosol generating product A, the heating element 4 is placed inside the housing cavity 21 and is configured to be energized to heat the aerosol generating product A and generate an aerosol, the airflow sensor 5 is placed inside the detection cavity 212 and is configured to acquire air pressure change information, and the control circuit board 61 is electrically connected to the airflow sensor 5 and is configured to output the number of times the user inhales in response to the air pressure change information.

[0028] One end of the containment cavity 21 is open, allowing the aerosol generating product A to be inserted into the heating cavity 211, and the heating cavity 211 can communicate with the outside air. The other end of the containment cavity 21 is closed, and when the deformable member 3 is placed inside the containment cavity 21, it forms a sealed detection cavity 212 by surrounding it with the closed end. When the user inhales, negative pressure is generated inside the heating cavity 211, and because the air pressure on the side closer to the suction segment A3 is low, the deformable member 3, which is farther away from the suction segment A3, is pulled by the negative pressure and deforms toward the suction segment A3. Because the detection cavity 212 has a sealed structure, the internal gas mass is constant, and as the deformation of the deformable member 3 increases the volume of the detection cavity 212, the internal air pressure (gas pressure) decreases, and when the airflow sensor 5 detects this change in air pressure, the control circuit board 61 can output information in response to the user's number of inhalations.

[0029] In one embodiment, the heating cavity 211 and the detection cavity 212 are arranged sequentially along the axial direction (axis B direction) of the containment cavity 21, with one side of the deformable member 3 forming the cavity wall of the heating cavity 211 and the other side closing the detection cavity 212. To adapt to conventional aerosol generating products A, the heating cavity 211 is a cylindrical cavity body with a straight axis, and the axis of the containment cavity 21 is also straight to facilitate deformation of the deformable member 3 based on negative pressure. According to usage practice, the heating cavity 211 and the detection cavity 212 are arranged sequentially along the vertical direction, allowing the deformable member 3 to deform based on negative pressure during suction. Naturally, in other embodiments, the detection cavity 212 may be located on one side of the heating cavity 211 and is generally arranged along the radial direction of the containment cavity 21.

[0030] In some embodiments, the deformable member 3 is manufactured from a flexible material that is easily deformable, such as a common silica gel material. Because this manufacturing material is common and the manufacturing method is mature, it facilitates the production and processing of the deformable member 3 and reduces costs.

[0031] In some embodiments, the power supply assembly 6 may further include a display module to allow for better and more intuitive confirmation of the user's suction count information. The display module may be exposed and positioned on the housing assembly 1, or a portion of the housing assembly 1 may be configured as a transparent structure, with the display module positioned in the transparent section and connected to the control circuit board 61. It can display information on the number of suctions used and / or the number of suctions remaining. Such display methods are already mature prior art and will not be described here.

[0032] In some embodiments, the deformation member 3 is a flat planar structure, and there is a gap between the deformation member 3 and the side of the airflow sensor 5. Such a structure of the deformation member 3 is relatively simple, easy to manufacture, and reduces production costs. Of course, in some other embodiments, the deformation member 3 may be a curved structure that protrudes toward the heating cavity 211, thereby separating the deformation member 3 from the side of the airflow sensor 5 and avoiding any impact on the accuracy of detecting airflow changes when the two come into contact.

[0033] To facilitate deformation, enable detection of suction count information even with weak suction, and improve the accuracy of the count, the deformable member 3 includes a plurality of convex and concave portions, which are arranged continuously and alternately to form a wave-like shape.

[0034] In some embodiments, referring to Figure 3, the bracket assembly 2 includes a bracket base 22 and a base 23, where at least a portion of the structure of the base 23 is inserted into the bracket base 22, and the deformation member 3 is positioned on the base 23. The bracket base 22 and the base 23 may be integrally molded structures, thereby improving the overall airtightness of the bracket base 22 and avoiding the impact of air leaks on the detection results. Naturally, in some other embodiments, the bracket base 22 and the base 23 may be separate structures to improve the production efficiency and reduce the difficulty of production, and the design improves the airtightness between the bracket base 22 and the base 23 by reducing mounting errors.

[0035] To facilitate the installation and fixing of the airflow sensor 5, the base 23 is provided with a mounting hole 231, and the airflow sensor 5 is positioned within the mounting hole 231. The airflow sensor 5 and the mounting hole 231 are connected by an interference fit, thereby ensuring better airtightness of the surface of the airflow sensor 5 facing the deformable member 3. The airflow sensor 5 may be an airflow sensor or a pressure sensor, both of which can monitor changes in airflow by detecting changes in pressure.

[0036] When the generating device is in operation, its internal temperature is high (300°C to 400°C). To prevent structural damage from affecting the accuracy of the detection results, both the bracket substrate 22 and the base 23 are manufactured from high-temperature resistant Polyether Ether Ketone (PEEK) material.

[0037] Please refer to Figures 3 and 5. In some specific embodiments, the base 23 includes an insertion portion 232 and a base portion 233, the side wall structure of the insertion portion 232 forming part of the heating cavity 211, and a first stepped structure 2321 is provided inside the insertion portion 232. The first stepped structure 2321 is configured to abut the end of the aerosol generating product A, allowing the aerosol generating product A to be positioned so that its substrate segment A1 is placed correspondingly within the heating member 4, thereby improving heating efficiency and ensuring that the substrate segment A1 of the aerosol generating product A is sufficiently heated, avoiding waste due to insufficient heating, and also preventing impurities generated by the heating of the non-substrate segment A1 within the heating member 4 from affecting the mouthfeel of the aerosol. The first stepped structure 2321 may be formed by two cavities of different diameters inside the insertion portion 232, one cavity may be configured to accommodate the deformation member 3 and the airflow sensor 5, and the other cavity may be configured to house a part of the structure of the aerosol generating product A. The first stepped structure 2321 may also be formed by a plurality of protruding structures provided on the inner wall of the insertion portion 232, the shape of which the protruding structures may be cylindrical or conical. To better support the aerosol generating product A, the surface of the protruding structures facing the aerosol generating product A is a flat plane.

[0038] In some specific embodiments, the deformation member 3 is positioned inside the insertion portion 232 and connected to the insertion portion 232 by interference fit, thereby completely separating the heating cavity 211 from the detection cavity, ensuring a sealing effect of the detection cavity 212, and improving the accuracy of the detection results.

[0039] In some specific embodiments, the base portion 233 is connected to the insertion portion 232, and the surface of the base portion 233 facing the insertion portion 232 abuts against the bracket base 22. The base portion 233 and the insertion portion 232 are integrally molded, which improves the airtightness after installation and also improves installation efficiency. Of course, in other embodiments, the base portion 233 and the insertion portion 232 may be separate structures that are detachably connected to facilitate independent processing.

[0040] Refer to Figures 3 and 5. In some embodiments, a second stepped structure 2322 is provided on the side of the insertion portion 232 away from the base portion 233, and a positioning structure 221 is provided on the inner wall of the bracket base 22. The heating element 4 is inserted into the insertion portion 232, with one end in contact with the second stepped structure 2322 and the other end in contact with the positioning structure 221. The heating element 4 forms part of the heating cavity 211, which is configured to mainly contain the substrate segment A1 of the aerosol generating product A. The arrangement of the second stepped structure 2322 and the positioning structure 221 facilitates the fixing, positioning, assembly, and mounting of the heating element 4, thereby improving the consistency of multiple generating devices. The heating element 4 may be a heating tube made of a heat-generating conductor, and may include a tube (heat-conducting tube) and a heating film, heating layer, or heating circuit provided thereon. Naturally, in some other embodiments, the heating element 4 may be made of a soft magnetic material and can generate heat in cooperation with the electromagnetic coil to heat the aerosol-generating product A. The second stepped structure 2322, like the first stepped structure 2321, may be formed by two cavities of different diameters, and one of the two cavities forming the second stepped structure 2322, which is relatively far from the base portion 233, is configured to accommodate the heating element 4. The second stepped structure 2322 may also be a plurality of protrusions on the inner wall of the insertion portion 232, and the protrusions may be provided with recesses for locking the heating element 4 in order to better secure the heating element 4. Based on the heating characteristics of the generating device and the aerosol-generating product A, when the aerosol-generating product A is attached, its end is closer to the base portion 233 than to the heating element 4. Therefore, the second stepped structure 2322 is further away from the base portion 233 than the first stepped structure 2321.

[0041] Since the heat-generating element 4 is inserted into the insertion portion 232, there may be an assembly gap between them that could cause gas leakage. To improve sealing, the bracket assembly 2 further includes a first sealing member 24 for sealing the gap between the heat-generating element 4 and the insertion portion 232.

[0042] Referring to Figure 6, in some specific embodiments, the first sealing member 24 includes a first sealing portion 241, a second sealing portion 242, and a third sealing portion 243. The first sealing portion 241 extends along the axial direction of the insertion portion 232 (in the direction of the axis B of the housing cavity 21) and is positioned between the inner wall of the insertion portion 232 and the outer wall of the heating member 4. The second sealing portion 242 extends along the radial direction of the insertion portion 232 (perpendicular to the direction of the axis B of the housing cavity 21) and each of its ends is connected to the first sealing portion 241 and the third sealing portion 243. The third sealing portion 243 extends along the axial direction of the insertion portion 232 (in the direction of the axis B of the housing cavity 21) and is positioned in close contact with the outer wall of the insertion portion 232. The first sealing portion 241, the second sealing portion 242, and the third sealing portion 243 are arranged continuously to form a structure with a "U" cross-section, and when installed, the first sealing member 24 only needs to be fitted into the end of the insertion portion 232 away from the base portion 233. The first sealing member 24 is made of silica gel, which has a high sealing effect, is readily available, and is easy to manufacture and process.

[0043] Refer to Figures 7 and 8. In some embodiments, a first engagement structure 2331 is provided on the side of the base portion 233 opposite the insertion portion 232, and a second engagement structure 11 is provided inside the housing assembly 1, in order to facilitate the fixing of the bracket assembly 2 within the housing assembly 1 and to avoid any impact on the mounting and use effect of the aerosol generating product A due to its vibration. The bracket assembly 2 is fixed by the engagement of the first engagement structure 2331 and the second engagement structure 11. The first engagement structure 2331 includes a continuously provided first extension portion 2332 and a first engagement portion 2333, and the second engagement structure 11 includes a continuously provided second extension portion 111 and a second engagement portion 112. The first extension portion 2332 and the second extension portion 111 both extend along the axial direction of the base portion 233 (in the direction of the axis B of the housing cavity 21), and the first engaging portion 2333 and the second engaging portion 112 extend generally along the radial direction of the base portion 233 (perpendicular to the direction of the axis B of the housing cavity 21), and their extension directions are opposite. The first engaging portion 2333 and the second engaging portion 112 come into contact with each other to secure the bracket assembly 2. To ensure the stability of the bracket assembly 2's fixation, at least two of each of the first engaging structure 2331 and the second engaging structure 11 are provided, for example, two, three, or four, and this is not limited to the number provided herein. The number of first engaging structures 2331 and second engaging structures 11 are equal and provided in a one-to-one correspondence, and both the first engaging structure 2331 and the second engaging structure 11 are provided uniformly (at equal intervals) along the circumferential direction of the base portion 233.

[0044] In some specific embodiments, the mounting hole 231 is formed on the base portion 233. That is, the airflow sensor 5 is positioned on the base portion 233, and based on the fact that the first engagement structure 2331 includes a first extension portion 2332 and the second engagement structure 11 includes a second extension portion 111, when the first engagement structure 2331 and the second engagement structure 11 are engaged, a certain space is formed between them, and the airflow sensor 5 can be positioned in a suspended state. To avoid the influence of assembly gaps between the bracket assembly 2 and the housing assembly 1 on the detection results, the aerosol generator further includes a second sealing member 7 provided between the base portion 233 and the housing assembly 1. The second sealing member 7 is a seal ring and may be fitted onto the outside of the second engagement structure 11.

[0045] Refer to Figures 4 and 9. To better secure the aerosol generating product A and mount it centered (coaxially positioned with the heating cavity 211), and to avoid uneven heating caused by the aerosol generating product A being unevenly mounted within the heating cavity 211, the bracket assembly 2 further includes a clamping member 25. The clamping member 25 is positioned on the side of the bracket base 22 away from the base 23 and has a plurality of clamping portions 251 that are convex inward along its radial direction (perpendicular to the axis B of the housing cavity 21 and toward the center of the housing cavity 21). The clamping portions 251 are configured to abut against the outer wall of the aerosol generating product A, and the plurality of clamping portions 251 are uniformly (equally spaced) arranged along the circumferential direction of the clamping member 25, and the clamping member 25 and the bracket base 22 are coaxially positioned, thereby the clamping portions 251 uniformly form a plurality of clamping points along the circumferential direction of the aerosol generating product A. The clamping portion 251 may consist of a plurality of protruding points, protruding strips, or protruding blocks that are convex inward along the radial direction of the clamping member 25 (perpendicular to the axis B of the housing cavity 21 and toward the center of the housing cavity 21). The protruding points may be conical or hemispherical. Multiple such protruding points may be provided along the axial direction of the clamping portion 251 to form a plurality of clamping points in the axial direction of the aerosol generating product A.

[0046] Refer to Figures 4 and 10. In some embodiments, the bracket assembly 2 further includes an end cap 26 provided on the side of the clamping member 25 away from the bracket base 22 and coaxial with the clamping member 25. The inner wall of the end cap 26 is provided with a plurality of intake grooves 261, each extending along the axial direction of the end cap 26 (in the direction of the axis B of the housing cavity 21), and the intake grooves 261 are uniformly (equally spaced) along the circumferential direction of the end cap 26, and each intake groove 261 communicates with the heating cavity 211 and the airflow segment A2 of the aerosol generating product A, and as the user inhales, based on Bernoulli's negative pressure principle, outside air passes through the intake grooves 261 and enters the aerosol generating product A, thereby reducing the air pressure in the airflow segment A2 and causing the deformation member 3 to deform. The end cap 26 may have a cylindrical structure, and the intake groove 261 may be formed by providing a plurality of recesses on its inner wall, or the inner wall may be formed as a plurality of spaced projections. That is, the intake groove 261 is formed between two adjacent projections. The formation of the intake groove 261 is not limited to the above two methods, and there may be a space between the inner wall of the end cap 26 and the aerosol generating product A through which gas can pass.

[0047] Refer to Figures 3 and 4. In some embodiments, to avoid heat loss and improve heating efficiency, the aerosol generator further includes a reflector 8 that is coaxially fitted outside the heating element 4 and spaced apart from the heating element 4, for reflecting heat radiation from the heating element 4. The reflector 8 may be manufactured by winding a material with high surface smoothness, such as an aluminum film, copper film, or silver film, and can reflect the heat radiated onto its surface to the heating element, thereby increasing the temperature of the heating element and improving its heat utilization rate. Based on the small thickness of the aluminum film, copper film, or silver film (0.1 mm to 0.15 mm), less heat is conducted on it, and heat loss in the reflector 8 can also be reduced. Naturally, in other embodiments, a material with a low reflectivity, high surface smoothness, and high reflective effect may be selected. The reflective member 8 and the heat-generating member 4 are spaced apart, and air exists between them. Because air has a low thermal conductivity (0.0244 W / m·k under standard conditions), the amount of heat transferred to the reflective member 8 can also be reduced through air conduction.

[0048] Although the present invention has been described in detail using specific examples above, the above embodiments are merely for the purpose of deepening the understanding of the present invention and do not limit it. A person skilled in the art to which this application belongs can perform several simple deductions, modifications, or substitutions based on the idea of ​​this application.

Claims

1. Aerosol generating device, Housing assembly and A bracket assembly disposed inside the housing assembly and having a housing cavity inside, A deformable member is disposed within the aforementioned containment cavity and configured to divide the containment cavity into a heating cavity for containing an aerosol generating product and a detection cavity having a sealed structure, and is configured to deform when the user suctions, thereby changing the air pressure inside the detection cavity, and the deformable member separates the heating cavity and the detection cavity from each other. An airflow sensor is placed within the detection cavity and configured to acquire pressure change information, An aerosol generating device characterized by comprising a control circuit board electrically connected to the airflow sensor and outputting user inhalation count information in response to the pressure change information.

2. The aerosol generating apparatus according to claim 1, characterized in that the deformable member has a flat planar structure or a curved surface structure that protrudes toward the heating cavity.

3. The aerosol generating apparatus according to claim 1, characterized in that the deformable member includes a plurality of protrusions and a plurality of recesses, and the plurality of protrusions and the plurality of recesses are arranged continuously and alternately to form a wave shape.

4. The aerosol generating apparatus according to any one of claims 1 to 3, wherein the bracket assembly includes a bracket base and a base, at least a portion of the structure of the base is inserted into the bracket base, the deformation member is attached to the base, the base is provided with a mounting hole, and the airflow sensor is positioned within the mounting hole.

5. The aerosol generating apparatus according to claim 4, characterized in that the base includes an insertion portion and a base portion, the side wall structure of the insertion portion forms part of the heating cavity, a first stepped structure is provided inside the insertion portion for contacting the end of the aerosol generating product, the deformable member is arranged inside the insertion portion and connected to the insertion portion by interference fit, the base portion is connected to the insertion portion and the surface of the base portion facing the insertion portion contacts the bracket base.

6. The aerosol generating apparatus according to claim 5, further comprising a heating element disposed within the housing cavity for heating the aerosol generating product, a second stepped structure provided on the side of the insertion portion away from the base portion, a positioning structure provided on the inner wall of the bracket base, the heating element inserted into the insertion portion, with one end in contact with the second stepped structure and the other end in contact with the positioning structure.

7. The aerosol generating apparatus according to claim 6, wherein the bracket assembly further includes a first sealing member for sealing the gap between the heating member and the insertion portion, the first sealing member includes a first sealing portion, a second sealing portion and a third sealing portion, the first sealing portion extends along the axial direction of the insertion portion and is positioned between the inner wall of the insertion portion and the outer wall of the heating member, the second sealing portion extends along the radial direction of the insertion portion and each of its ends is connected to the first sealing portion and the third sealing portion, and the third sealing portion extends along the axial direction of the insertion portion and is positioned in close contact with the outer wall of the insertion portion.

8. A first engagement structure is provided on the side of the base portion opposite to the insertion portion, and a second engagement structure is provided within the housing assembly. The first engagement structure and the second engagement structure are engaged, and the bracket assembly is fixed in place. The aerosol generating apparatus according to claim 5, further comprising a second sealing member disposed between the base portion and the housing assembly.

9. The bracket assembly further includes a clamping member positioned on the side of the bracket base away from the base, the clamping member having a plurality of clamping portions that are convex inward along its radial direction, and the clamping portions are configured to contact the outer wall of the aerosol generating product. The aerosol generating apparatus according to claim 5, wherein the bracket assembly further includes an end cap provided on the side of the clamping member away from the bracket base and coaxially with the clamping member, the inner wall of the end cap is provided with a plurality of intake grooves, each of the plurality of intake grooves extending along the axial direction of the end cap and uniformly provided along the circumferential direction of the end cap, and the intake grooves communicate with the heating cavity and the airflow segment of the aerosol generating product, respectively.

10. The aerosol generating apparatus according to claim 6, further comprising a reflective member that is coaxially fitted to the outside of the heating element and positioned at a distance from the heating element, for reflecting the heat radiation of the heating element.

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